linux-kernel - Re: [PATCH v5 12/34] drm/mediatek: mtk_hdmi: Unregister audio platform device on failure

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Message-ID: <b1bcd983f5c1f88dff080127a6594ef6f9cfe75b.camel@mediatek.com>
Date: Wed, 22 Jan 2025 01:23:04 +0000
From: CK Hu (胡俊光) <ck.hu@...iatek.com>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	"chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>
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Subject: Re: [PATCH v5 12/34] drm/mediatek: mtk_hdmi: Unregister audio
 platform device on failure

Hi, Angelo:

On Mon, 2025-01-13 at 15:52 +0100, AngeloGioacchino Del Regno wrote:
> External email : Please do not click links or open attachments until you have verified the sender or the content.
> 
> 
> The probe function of this driver may fail after registering the
> audio platform device: in that case, the state is not getting
> cleaned up, leaving this device registered.
> 
> Adding up to the mix, should the probe function of this driver
> return a probe deferral for N times, we're registering up to N
> audio platform devices and, again, never freeing them up.
> 
> To fix this, add a pointer to the audio platform device in the
> mtk_hdmi structure, and add a devm action to unregister it upon
> driver removal or probe failure.

Reviewed-by: CK Hu <ck.hu@...iatek.com>

> 
> Fixes: 8f83f26891e1 ("drm/mediatek: Add HDMI support")
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> ---